this is one of the things that our government does. you may remember me wearing a funny outfit when we traveled to mexico while they were giving up the last of their jury rain yum. working with our administration to safely contain and take away that material. from the beginning of this presidency, the work has been a priority for president obama. ten weeks after he was inaugurated in 2009, he traveled to praug and laid out his vision in front of 20,000 people. >> as a nuclear power as the only nuclear power to have used a nuclear weapon, the united states has a moral responsibility to act. we cannot succeed in this endeavor alone, but we can lead it. we can start it. so today i state clearly and with conviction america's commitment to seek the peace and security of a world without nuclear weapons. [ applause ] i'm not naive. this it goal will not be reached quickly. perhaps not in my lifetime. it will take patience and persistence. but now we, too, must ignore the voices who tell us that the world cannot change. we have to insist, yes